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Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
1mo
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Geospatial Backend Developer – Multiple Positions at Junior/Mid/Senior Levels
Springfield or Vienna or St. Louis or Sun Prairie
OnsiteFull Time
2+ YOEUS citizen with active/current Top Secret/SCI clearance, Bachelor's in CS/Engineering/GIS/STEM, 2+ years backend development experience using Python/Node.js/Java, ArcGIS Enterprise experience, containerization (Docker/Kubernetes), REST API design, and cloud familiarity.
Esri, ArcGIS Enterprise, ArcGIS Enterprise SDKs, Python, Node.js, Java, Docker, Kubernetes, PostgreSQL, PostGIS, Microsoft SQL Server, Azure, AWS, GCP, REST
1mo
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Geospatial Backend Developer – Multiple Positions at Junior/Mid/Senior Levels
Springfield or Vienna or St. Louis
OnsiteFull Time
2+ YOERequires US citizenship and active Top Secret/SCI clearance, Bachelor’s in CS/Engineering/GIS or STEM, 2+ years backend experience, Python/Node.js/Java, ArcGIS Enterprise experience, containerization (Docker/Kubernetes), REST API design.
Esri, ArcGIS Enterprise, ArcGIS Enterprise SDKs, Python, JavaScript, Node.js, Java, REST APIs, Docker, Kubernetes, PostgreSQL, PostGIS, SQL Server, Azure, AWS, GCP
1mo
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Software Development Engineer II- Back End
Redlands or St. Louis or Vienna
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years backend engineering experience; professional experience with Python, Node.js/JavaScript, and Java; experience with ArcGIS Enterprise, containerization (Docker/Kubernetes), API design, and Top Secret/SCI clearance required; Bachelor's in STEM.
Python, Node.js, Java, ArcGIS Enterprise, ArcGIS Enterprise SDKs, Docker, Kubernetes, Azure, AWS, GCP, PostgreSQL, PostGIS, SQL Server
1mo
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Software Development Engineer II- Back End
Redlands or St. Louis or Vienna
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years backend engineering experience; professional experience with Python, Node.js, and Java; REST API and service architecture design; containerization; ArcGIS Enterprise experience; Top Secret/SCI clearance and Bachelor’s degree in a STEM field required.
Python, Node.js, Java, ArcGIS Enterprise, ArcGIS Enterprise SDKs, Docker, Kubernetes, Azure, AWS, GCP, PostgreSQL, PostGIS, SQL Server
1mo
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Software Development Engineer II- Back End
Redlands or St. Louis or Vienna
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years backend engineering experience building services with Python, Node.js/JavaScript, or Java; REST API design; ArcGIS Enterprise integration; containerization (Docker/Kubernetes); Top Secret/SCI clearance required; Bachelor's degree in CS/Math/GIS/STEM.
Python, Node.js, JavaScript, Java, ArcGIS Enterprise, ArcGIS Enterprise SDKs, Docker, Kubernetes, Azure, AWS, GCP, PostgreSQL, PostGIS, SQL Server, REST APIs
3w
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Software Development Engineer II – Back-End (Mission-Focused | ArcGIS)
Redlands or St. Louis or Vienna
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years backend experience building services and REST APIs using Python, JavaScript/Node.js, and Java; experience with ArcGIS Enterprise, containerized environments, and TS/SCI clearance; Bachelor's in CS, math, GIS, or STEM.
Node.js, JavaScript, Python, Java, ArcGIS Enterprise, ArcGIS Enterprise SDKs, Docker, Kubernetes, Azure, AWS, GCP, PostgreSQL, PostGIS, SQL Server
3w
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Software Development Engineer II – Back-End (Mission-Focused | ArcGIS)
Redlands or St. Louis or Vienna
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years backend engineering experience with Python, Node.js, or Java; REST API and service architecture experience; ArcGIS Enterprise integration; containerization (Docker, Kubernetes); Top Secret/SCI clearance and a STEM bachelor's required.
Python, Node.js, Java, ArcGIS Enterprise, ArcGIS Enterprise SDKs, Docker, Kubernetes, Azure, AWS, GCP, PostgreSQL, PostGIS, SQL Server
3w
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Software Development Engineer II – Back-End (Mission-Focused | ArcGIS)
Redlands or St. Louis or Washington or Vienna
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years backend engineering experience with Python, JavaScript/Node, or Java; REST API and service architecture experience; ArcGIS Enterprise integration; containerization (Docker/Kubernetes); active Top Secret security clearance (SCI eligible); Bachelor's in STEM.
Node.js, Python, Java, ArcGIS Enterprise, ArcGIS Enterprise SDKs, Docker, Kubernetes, Azure, AWS, GCP, PostgreSQL, PostGIS, SQL Server
5d
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Software Engineer, Mid
Herndon, Virginia, United States
$69k-$158k/yr OnsiteFull Time
2+ YOE2+ years in object-oriented programming (Java/JEE), backend frameworks (Spring), API/REST development, Linux experience, ability to obtain DoD 8570 certification (Security+ or CISSP), TS/SCI clearance with polygraph required.
Java, JEE, Spring Framework, Spring Boot, REST, Linux, NiFi, Apache NiFi, PKI, MongoDB, Jira, Confluence, Git, GitLab, Kafka
5d
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Software Engineer, Mid
Herndon, Virginia, United States
$69k-$158k/yr OnsiteFull Time
2+ YOE2+ years OOP experience (Java/JEE), backend frameworks (Spring/Spring Boot), REST API development, Linux CLI, NiFi; TS/SCI clearance with polygraph required; ability to obtain DoD 8570 certification (Security+ or CISSP) within 6 months.
Java, JEE, Spring Framework, Spring Boot, REST, Linux, NiFi, MongoDB, Jira, Confluence, Git, GitLab, Apache Kafka
1w
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Data Integration Engineer (Systems Engineer, Sr)
Chantilly, Virginia, United States
OnsiteFull Time
1+ YOEU.S. eligibility for DoD clearance, STEM bachelor's or equivalent, 1+ years backend/data services experience, API design (REST/GraphQL), Python/C++/Rust, PostgreSQL/Neo4j/doc DBs, CI/CD and data/security fundamentals.
REST, GraphQL, Python, C++, Rust, PostgreSQL, Neo4j, gRPC, SOAP
1w
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Lead Knowledge Graph Engineer (All levels Software Engineer)
Chantilly, Virginia, United States
OnsiteFull Time
1+ YOEDesign and scale knowledge‑graph infrastructure; build high‑throughput backend services in Python/C++/Rust; API design (REST/GraphQL/gRPC); PostgreSQL and Neo4j experience; security eligibility for U.S. government clearances.
Python, C++, Rust, REST, GraphQL, gRPC, PostgreSQL, Neo4j, SOAP
1w
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Full Stack Software Engineer (Full Stack Developer All levels)
Chantilly, Virginia, United States
OnsiteFull Time
1+ YOEU.S. eligibility required; STEM bachelor's preferred; 1+ years full‑stack experience with React, TypeScript/JavaScript and backend in Python/C++/Rust; experience with REST/GraphQL/gRPC, WebSockets, distributed systems, CI/CD, and testing.
TypeScript, JavaScript, React, Python, C++, Rust, HTML, CSS, WebSockets, REST, GraphQL, gRPC, Git
2w
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Database Engineer – GSE (Ground Support Engineer)
Sterling, Virginia, United States
$61k-$114k/yr OnsiteFull Time
0+ YOEBachelor's in a technical discipline or equivalent, 0-2 years database engineering experience, strong relational DB experience (PostgreSQL, MySQL, SQL Server), schema design, performance tuning, and backend integration skills.
PostgreSQL, MySQL, SQL Server, Python, C#, Java, JavaScript, PowerShell, ERP, PLM, MES
1w
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AI/ML Engineer (Systems Engineer, Sr)
Chantilly, Virginia, United States
OnsiteFull Time
1+ YOEU.S. citizen eligible for DoD Secret clearance, 1+ years backend/systems engineering experience, proficiency in Python/C++/Rust, experience with agentic systems, graph data modeling, real‑time pipelines, API design, and secure operations.
Python, C++, Rust, Neo4j, DGraph, ArangoDB, CUDA, REST, GraphQL, gRPC, SOAP, UDP, TCP, Pub/Sub, CI/CD
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